You were supposed to stay in your seats, keep your eyes on your work，_________ to anyone.
A.but could not talk B.could not talk C.and not to speak D.but not speak正确答案C
You were supposed to stay in your seats, keep your eyes on your work，_________ to anyone.
A.but could not talk B.could not talk C.and not to speak D.but not speak正确答案C
